Albert Nestler, Lahr in Baden / Germany (1970) *************************************************************** S C A L E S of the N E S T L E R » RIETZ « Model 0232 =============================================================== Front Side [ inverse / RED ] Back Side =============================================================== ( 0 ... 27 cm Ruler ) K X3 A X2 --------------------------------------------------------------- B X2 S sin(0.1X) [CI] [1/X] ST arc(0.01X) C X T tan(0.1X) --------------------------------------------------------------- D X L lgX ( 0 ... 10 " Ruler ) R E M A R K S : ( 1° = 60' ; 1' = 60" ) =============================================================== The TRIGONOMETRIC SCALES are divided in MINUTES(') & SECONDS(") This historic mahogany model is the follower of Model »No.23«. It has a table with physical constants and conversions on its back side - together with the blind print "370", means, it was made in March 1970. It came in a dark-brown leather case. Have a look at OLDER VERSIONS Historical Remarks ... impressum: *************************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 08/12/09 |